Feed-water heater and condenser.



No. 692,378. Patented Feb. 4, I902. J. W. STANSHELD.

FEED WATER HEATER AND CONDENSER.

(Application filed Aug. 8, 1901.

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FEED WATER HEATER AND CONDENSER.

(Application filed Aug. 8, 1901.)

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FEED WATER HEATER AND CONDENSER. (Application filed Aug. 8, 1901'.

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Uwrrno STATES JOHN NVILLIAM STANSFIELD,

OF IIARILEPOOL, ENGLAND.

FEED-WATER HEATER AND CONDENSER.

SPEOIFECATIDN forming part of Letters Patent N 0. 692,378, datedFebruary Application filed August 8, 1901. Serial No. 71,353. (Nomodel.)

To all whom it may concern.-

Be it known that I, JOHN WILLIAM STANS- FIELD,engineer, asubjeet of theKing of Great Britain and Ireland, residing at 21 Charles street,Hartlepool, in the county of Durham, England, have invented certain newand useful Improvements in Connection with Feed- I/Vater Heaters andCondensers, (for which I have made application for Letters Patent inGreat Britain, No. 995, bearing date January 15, 1901,) of which thefollowing is a specification.

This invention relates to improvements in connection with feed-waterheaters and condensers, the object being to arrange a combination formof apparatus which will admit of the entire utilization of theexhaust-steam for a return feeding to the boiler.

In the accompanying drawings, Figure l is a sectional elevation of myapparatus attached to an ordinary cooler or condenser. Fig. 2 is asectional plan of the same. Fig. 3 is a sectional elevation of thecooler or condenser chamber I prefer to employ, and Fig. 4 is asectional end elevation of the adjustable cone.

In carrying my invention into effect in one convenient manner I employan exhauststeam injector, through which I pass the exhaust-steam, and Icause this exhaust-steam to mix with the water obtained by condensationof such exhaust-steam that has passed through the condenser or cooler,and at the outlet portion of the apparatus the current is divided up, aportion of the Water going to feed the boiler, while the other portionis sent through the condenser-tubes under pressure, which enables it tobe delivered into contact with the incoming exhaust-steam withconsiderable velocity at the inner end of the ap paratus.

In making my improved combinationapparatus I employ as a cooling mediumcold water, which may be circulated around or through a battery of tubesa, mounted in an ordinarycasing b, or the cooling medium may be cold airemployed either around or through the tubes, depending upon the mannerin which the water from condensation passes through the apparatus. Iarrange a small nozzle 0 at the outer end of the injector-casing toadmit of cold water being added to compensate for leakage and forstarting the apparatus.

I make my injector-casing in one convenient manner with a branch 01 atthe upper end to receive the exhauststeam, another branch 6 near thenozzle-entrance to be connected to the cooler-chamber Z9, while themixing-chamber f I provide with an ordinary cone h or other likefitting. The area between the mouth'ot' this cone and steam-nozzle In Icontract, so as to enable the pressure to be absorbed in producingvelocity in the water entering the mixing-cone from c, and at the lowerend of my casing I contract the area, so that one part of the water iscarried through the branch I to the boiler, while the other part isdelivered to another branch m, which communicates to the lower end ofthe coolerchamber, from which the mixture of water and steam thentravels through the cooling- I provide for an adjustment in the areabetween the mixing and steam cones, as shown in detail in Fig. 4.. Uponthe outside of the cone-nozzle It I form or secure a toothed ring orworm-wheel 02, into which Works a worm or thread 0, the worm-spindle pbeing actuated from the outer end of the stuffing-box gland '7'. By thismethod of adjustment I can vary the speed and quantity of water which isdelivered into the mixing-chamber to suit any requirement. Instead ofemploying a worm and worm-wheel I may arrange bevel or other ordinarygearing or appliances for raising and lowering the cone or nozzles.

I fit an overflow-valve s on the injectorcasing near the end of themixing-cone to allow steam to pass direct through the pipet to thecooler for starting the condenser.

I provide an air-escape valve it on the top of the inlet end of thecooler to prevent excessive pressure and to allow any accumulating airto be blown out.

I prefer to fit a bathe-plate m over the ends of the tubes, so disposedas to prevent the passage into the tubes of air, oil, or impuritieswhich may be on the surface of the water.

I make the size of the steam-inlet proportional to the speed of steamrequired when the condenser is working at its full capacity,

and I adjust the water-entrance area to suit the working pressuredesired Within the cooler.

I do not limit the application of my improved arrangement of injector,feed-supply, and con denser to apparatus in which exhauststeam only isemployed; but I modify the size of the fittings and branches to suitlive steam and also to suit the quantity of water which is to bedelivered or dealt with. I sometimes assist the feed to the boiler bythe employment of a jet of live steam when delivering against a highboiler-pressure, and I modify the form of casing for the condenser tosuit the type of surface employed and to suit the cooling medium to beused in connection with such condenser.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is I 1. In a condenser and feed-water-supplyapparatus in combination, an injector provided with an adjustable conefor regulating the water-inlet, an outlet branch for connection to theend of the cooler and another outlet branch leading to the boilerfeed-supply substantially as described.

2. In a condenser in combination, an in: jector having a cold-waterstarting branch or nozzle a water-supply inlet from the coolerchamberand a water-s11 pply outlet or delivery to the end of the same chamber,with an additional outlet or delivery branch for hot condensed water toboiler, substantially as described.

3. In a condenser in combination a coolingchamber, an injector having aninlet for exhaust-steam, an inlet for water from the cooler, two outletsfor water to the cooler one being an overflow provided with a non-returnValve, and a free delivery-outlet for water at the end of the injectorsubstantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

JOHN WILLIAM STANSFIELD.

Witnesses:

MATTHEW HARRISON, W. R. HARRISON.

